Boiler



BOILER Filed July 20,

" Patented Feb. l?, 1925.

UNITED STATES PATENT OFFICE.

ANDREW R. BLACKSTONE, OFSANDIEGO, CLIFORNIA, ASSIGNOR 0F ONE-FOURTH T0 WILLIAM D. CHAMBERLAN, 0F SAN DIEGO, CALIFORNIA.

BOILER.

Application led July 20, 1922. Serial No. 576,229.

To all whom t may concern:

Be it known that I, ANDREW R. BLACK- s'roNn, a citizen of the United States, residing at San Diego, in the county of San Diego and State of California, have invented a certain ne-w and useful Boileiyof which the following is aspecification.

My invention relates to boilers more particularly to high pressure transportable boilers for producing the steam for self propelled vehicle engines and the objects of my invention are: First, to provide a boiler of this class in which the crown sheet or portions of the boiler subjected to the frame of the burner are covered by the liquid within the boiler at all times irrespective of a substantial angular tilting of the boiler; second, to provide a boiler of this class in which the usual trouble of blowing out tubes in the conventional boiler will be eliminated; third, to provide a boiler of this class with novel heat conducting and distributing units; fourth, to provide a boiler of this class in which the heat conducting and distributing units are not exposed to the direct lire; lifth, to provide a boiler of this class with novel heat retaining and distributing means; sixth, to provide a boiler of this class with substantially instantaneous steam generating and superheating means; seventh, to provide a superheater in connection with the boiler which will be lled with steam almost immediately after starting the main burners of the cold boiler, thus preventing injury by heat to the superheater as is usual with the superheater of the conventional boiler of the transportable type eighth, to provide a novel fuel gasifying means; ninth, to provide a novelly constructed boiler of this class; tenth, to provide a boiler of this class in which the scale accumulation is reduced to a minimum and eleventh, to provide a boiler of this class which is very simple and economical of construction, durable, compact, eiiicient, easy to operate and which will not readily deteriorate or get out of order.

With these and other-objects in view as will appear hereinafter my invention consists of certain novel features of construction, combination and arrangement of parts and portions as will be hereinafter described in detail and particularly set forth in the appended claims, reference being had to the `accompanying drawings and to the charac-` ters of reference thereon which form a part of this application in which:

Figure l is a plan view of my boiler with portions broken away and in section to facilitate the illustration; Fig. 2 is a partial elcvational and partial sectional View thereof taken at 2 2 of Fig. l; Fig. 3 is a sectional View thereof taken at 3--3 of Fig. l showing certain parts and portions in elevation to facilitate the illustration; Fig. -l is a horizontal sectional view of a portion of my boiler taken at fl-; of Fig. 3 showing the arrangement of the burners, superheater, gasiiier and the like; Fig. 5 is a sectional view taken through of Fig. 4 with certain portions shown in elevation to facilitate the illustration and Fig. t3 is a fragmentary elevational view taken at (-G of Fig. 5 showing the gasiiier and pilot burner.

Like characters of reference refer to similar parts and portions throughout the several views of the drawings.

The steam and water receptacle members l and 2, bolts 3, nut l, steam generating coil 5, superheating coil (i, plug T, burner menibers 8 and 9, brackets l0, gas tube ll, gasifying member l2, gasifying burner lf3, pilot tubes 14C, pilot tubes l5 and the heat retaining member 16 constitute the principal parts and portions of my boiler structure.

The boiler proper consists of a lower steam and water receptacle member l, and an upper steam and water receptacle meinber 2, both preferably made of lyonite or other metal having great strength and a high factor of heat conductivity. The lower receptacle member l is made frustoconical in shape at its central portion la with another larger inverted frusto-conical portion 1b secured over and to the portion la at its lower end. The portion la is provided at its upper end with an upwardly extending slightly tapered tube portion le. Said frusto-conical portion la is also provided with a plurality of thin fins 1d and lB extending from near the lower end thereof in gradually widening bands to and over the top thereof, the fins 1d terminating in the upwardly extending tube portion l, the others le being slightly' spaced therefrom. Said lower receptacle member l is provided at the upper end of the larger truste-conical portion lb with a flange lf and an upwardly tapering annular ange 1H adapted to engage a similar flange 2?. and recess 2b respectively in the upper receptacle member 2. Said member 2 is also frusto-conically shaped, closed at its upper end and provided with a tapered hole 2a to receive the tapered tube portion 1C of themember 1. Said receptacle members are secured together at theii` flanges 1f and 2L with bo-lts 3, and by a locknut A engaging the upper end of the tube portion 1C of the member 1 extending through and above the tube 2c in the member 2. A steam generating coil 5 is provided in the recess formed by the frusto-conical portion 1a of the member 1 and is connected at its lower end to the lower portion of the receptacle member 1 by conductor 5a and is connected at its upper end to the top of the receptacle member 2 above the water level by the conductor 5b extending through the tubular portion of the receptacle member 1. A superheater or superheating coil 6 is also provided in said recess and the various coil portions of said coil are positioned between the various coil portions of the steam generating coil 5 forming a substantially continuous cylindrical vertical wall. Said coil 6 is similarly connected at its upper end to the top of the receptacle member 2 by a condu'ctor Ga similarly extending through the tubular portion of the receptacle member 1.

Said superheating coil 6 is also provided with a conductor 6b at its lower end to connect the boiler with an engine not shown in the drawings. A plug 7 is provided at the lower end of the tapered tubular portion 1c 0f the receptacle member 1 to retain the heat in the recess occupied by said coils. The burners supplying the heat for the boiler are preferably made in two sections 8 and 9. The inner burner member 8 is slightly larger at its inside diameter than the outside diameter of the coil and is provided on one side with an opening 8 to facilitate the removal of the same without removing said coils or disconnecting the same. The burner member 9 is similarly constructed and extends around the burner member 8. Said burners are supported on and spaced by the brackets 10 which are secured to the wall of the receptacle member 1. The burner members 8 and 9 are each provided with downwardly extending tubular portions 8b and 9a respectively and are connected at their lower ends to the conductors 11a ofthe gas tube 11, which conductors extend upwardly some distance into the tubular` portions of the burners and spaced from the wall thereof to also admit air to the burner. The gasifying` burner 13 is positioned within and at the lower end of the coils 5 and 6 and is supported on the members 13a secured to the receptacle member 1. Said burner receives its fuel supply by the conductor 13b connected to an acetylene generator not shown in the drawings. The gas tube 11 extends upwardly through Vsaid burner 13 and is provided at its upper end with a gasifying member 12, which is spherical, said tube extending near the top thereof. Said member 12 is also providedk with a fuel conductor 11i which is adapted to conduct fuel oil to the gasifying member 12 for the burner members 3 and 9. A valve 14a is provided in the fuel conductor 11i to regulate the fuel feed and therefore the steam generated. The gasifying burner 13 is pro-vided with outwardly extending and upwardly directed pilot tubes 15, the ends of which areY positioned adjacent the downwardly extending tubular portions of the burner members which are provided with orifices or slots in close proximity to each other and are v.adapted to direct a flame alongside said tubular portions of said burner members to ignite the gasesfescaping from the orifices therein. The heat retaining member 16 consists of helically drawn discs or sectors secured'together and spaced from each other preferably as shown in the drawings. Said member 16 is preferably supported `by clips 162L secured to the receptacle member 1. The boiler receives its supply of fresh water through the conductor 17, provided at the upper portion of the receptacle member 2, in the conventional manner. Y

Fuel oil is admitted in regulated quantities, by means of the valve 14, into the spherical o'asifying member 12 in which said fuel oil is gasified in regulated quantities depending upon the amount of steam required to be generated. This gasified fuel is discharged through the gas tube 11 into the conductors 112t and thence into the tubes 8b and 92L of the burner members S and 9, respectively. This gasiiied fuel is mixed with air which is admitted to the tubes 3b and 9a between the same and the conductors 11a, the mixed fuel and air passing through the tubular portions of the burner members and out of the orifices or slits provided therein where the mixture is ignited. The resulting burnt gases of combustion are by necessity forced downwardly by reason of the upper end of the recess of the receptacle member 1 being closed. Said gases of combustion are forced to take a helical downward path through the passage provided by the helically drawn discs of the heat retaining member 16. The heated gases of combustion, when being forced downwardly, heat the inner walls of the member 1 and therefore spend most of their energy in heating the water of the boiler before being exhausted at the lower end of the boiler.

Though I have shown and describedv a particular construction, combination and arrangement of parts .and portions I do not wish to be limited to this particular construction, combination or'arrangement but desire to include in the purview of my invention the construction, combination and arrangement substantially as set forth in the appended claims.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is l. A boiler of the class described, including a steam and water receptacle provided with a recess extending inwardly from the bottom thereof, a burner positioned in the recess of said receptacle near the upper end thereof, a superheating coil positioned in said recess contiguous to said burner and connected to the receptacle above the normal water level therein and downwardly inclined heat distributing plates mounted in said recess below said burner.

2. A boiler of the class described, including a steam and water receptacle provided with a recess extending inwardly from the bottom thereof and provided with a plurality of thin substantially vertical heat conducting tins within said receptacle and on the wall thereof forming said recess, a burner positioned in the recess of said receptacle near the upper end thereof, a. superheating coil positioned in said recess contiguous to said burner and connected to the receptacle above the normal water level therein and downwardly inclined heat distributing plates mounted in said recess.

8. A boiler of the class described, including a steam and water receptacle provided with a recess extending inwardly from the bottom thereof, a burner positioned in the recess of said receptacle near the upper end thereof, a steam generating coil positioned in said recess contiguous to said burner and connected with the inside of said receptacle at the upper and lower portions thereof, a superheating coil also positioned in said recess contiguous to said steam generating coil and connected to said receptacle above the normal water level therein and downwardly inclined heat distributing plates mounted in said recess below said burner.

4. A boiler of the class described including a steam and water receptacle provided with a recess extending into said receptacle, a burner positioned in the recess of said receptacle, a superheating coil positioned in said recess contiguous to said burner and connected to the receptacle above the normal water level therein and substantially helically shaped heat distribut'ng members positioned in said recess between said superheat-ing coil and the wall forming said recess.

5. A boiler of the class described, including a steam and water receptacle provided with a recess extending into said receptacle, and provided with a plurality of thin substantially vertical heat conducting fins within said receptacle and on the wall thereof forming said recess, a burner positioned in the recess of said receptacle, a superheating coil positioned in said recess contiguous to said burner and connected to the receptacle above the normal water level therein and substantially helically shaped heat distributing members positioned in said recess between said superheating coil and the wall forming said recess.

6. A boiler of the class described, including a steam and water receptacle provided with a recess extending into said receptacle. a burner positioned in the recess of said receptacle, a steam generating coil positioned in said recess contiguous to said burner and connected with the inside of said receptacle at the upper and lower portions thereof, a superheater positioned in said recess contiguous to said steam generating coil and connected to said receptacle above the normal water level therein and substantially helically shaped heat distributing members positioned in said recess contiguous to said steam generating coil and superheater and the wall forming the recess within said receptacle.

7. A boiler of the class described, including a steam and water receptacle provided with a. recess extending into said receptacle, a. burner positioned in the recess of said receptacle, a steam generating coil positioned in said recess contiguous to said burner and connected with the inside of said receptacle at the upper and lower portion thereof, a superheater also positioned in said recess contiguous to said steam generating coil and connected to said receptacle above the normal water level therein. substantially helically shaped heat distributing members positioned in said recess contiguous to said steam generating coil and superheater and the wall forming the recess within said receptacle, another burner positioned contiguous to said steam generator coil and said superheater, a fuel gasifying means positioned above said latter burner. conductors connecting said gasifying means with said first mentioned burner and a fuel supply tank.

8. A boiler of the class described, including a lower steam and water receptacle member provided with an upwardly extending recess and a plurality7 of substantially vertical heat conducting fins extending outwardly from the wall forming said recess and provided with an upwardly extending tubular portion connecting with said recess. an upper receptacle member secured to said lower receptacle member provided with an opening in the4 upper portion thereof to receive the upwardly extending tubular portion of said lower receptacle member forming a water tight compartment between the walls of said receptacle members, circular burner members positioned in the recess of said lower receptacle member near the top thereof, a superheating coil positioned eenheating coil and the side wall of the recess trally in said recess below said burner and ofrsaid lower receptacle member.

connected through said tubular portion of In testimony whereof, I v have hereunto 10 said lower receptacle member to the upper set my hand at San Diego, California, this portion of said upper receptacle member, lll day of July, 1922.

and a helical shaped `heat distributing plate positioned in said recess between said super- ANDREW R. BLACKSTONE. 

